.w{
    width: 1200px;
    margin: auto;
}
.header{  
    height: 150px;
    overflow: hidden;
}
.head{ 
    margin: 40px auto;
    height: 42px;
}
.header section .logo{
    float: left;   
}
.header section .nav{  
    float: left;  
    margin-left: 80px; 
}
.header section .nav li{
    float: left;
   margin-right: 50px;
    font-size: 15px;
    line-height: 42px;
   text-align: center ;
}
.header section .nav li a:hover{
    border-bottom: 1px solid blue;
    color: blue;  
}

.header section .research{
    float: left;
    height: 42px;
    width: 350px;
}
.header section .research input{
    height: 40px;
    width: 300px;
    border: 1px solid blue;
    font-size: 15px;
    vertical-align: top;
}
.research button{
    width: 40px;
    height: 40px;
    background: url(../images/btn.png);
}
.header section .user{
    float: left;
    margin-left: 20px;
    font-size: 15px;
    line-height: 15px; 
}
.header section .user img{
    margin-left: 30px;
    height: 42px;
    width: 42px;
    border-radius: 40%;
    margin-bottom: 0px;
}
.banner{
    background-color:blue;
    height: 400px;
    background-image: url(../images/banner.png);
}
.banner .left li{
    height: 50px;
    width: 220px;
    font-size: 20px;
    line-height: 20px;
    padding-left: 15px;
    padding-top: 15px;
}
.banner .left ul{
    float: left;
}

.banner .left li span{
   float:right;
}
.banner .left li a:hover{
    color: aqua;
}
.banner .right{
    height: 300px;
    width: 250px;
    background-color: #fff;
    float:right;
    margin-top: 50px;
}
.banner .right ul li{
    margin: 20px 20px 0px 20px;
}
.banner .w .right h2{
    line-height: 50px;
    background-color: blueviolet;
    text-align:center;
}
.banner .w .right .course{
    border: 2px solid aqua;
    margin: 10px 20px;
    line-height: 40px;
    text-align: center;
}
.goods{
    margin-top: 10px;

    height: 50px;
    box-shadow: 0 2px 3px 3px rgba(0,0,0, 0.1);
}
.goods ul li:first-child{
    color: blue; 
    
}
.goods ul li{
    float: left;
    width: 100px;
    line-height: 15px;
    font-size: 20px;
    margin: 15px 20px;
    text-align: right;

}
.goods ul li:nth-child(n+2){
    border-left: 1px solid gray;  
}

.goods ul span{
    float:right;
    font-size: 12px;
    margin: 15px 15px;  
    color: #a4deff;
}
.project{
    height: 640px;
}
.proj .w ul li{
    width: 233px;
    height: 315px;
    background-color:#ffffff;
    margin-right: 7px;
    margin-bottom: 5px;
    float: left;
}
.proj .w ul li span{
    display: block;
    font-size: 14px;
    color: #000;
    margin: 30px 30px 10px 30px;    
}
.info{
    margin: 20px 30px;
}
.proj .w ul li .info section {
    display: inline-block;    
    color: red;
}
.proj h1{
    line-height: 60px;  
    display: inline-block;
    height: 60x;
    width: 300px;

}
.proj span{   

    color:grey;
   float: right;
   margin-top: 40px;
   
}
.footer{
    height: 500px;
}
.footer .left{
    height: 500px;
    float: left;
}
.footer img{
    margin-top: 30px;
    margin-bottom: 30px;   
}
.footer span{
    display: inline-block;
    height: 30px;
    width: 120px;
    border: 1px solid aqua; 
    line-height: 30px;
    font-size: 20px;
    color: aqua;
    text-align: center;
    margin-top: 20px;
}
.footer .right{
    float: right;
    height: 500px;
    width: 600px;
}
.footer .right ul{
    margin-top: 30px;
    
    width: 150px;
    float: right;
   
}
.footer .right ul h2{
    line-height: 30px;
}




